What properties does oxygen have?

i think it would be 80 km/h because 30 + 50 = 80 (sorry if this not the right answer i'm trying my best)

the earths atmosphere is made up of nitrogen and oxygen. solids can turn into gasses through a process called sublimation. sublimation is the transition of a substance directly from the solid to the gas phase, without passing through the intermediate liquid phase.

hope this : d